11_1/2x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack reflective-and-greenhouse-films This rooting formulation contains:

This rooting formulation contains:

Serial# TD42167 and earlier – must use Bodine motor

Emerald Triangle's ultra-potent PK booster takes it to the next level

Made for routers (different style of motor)

and longevity to grow sunup to sundown to sunup…year-round

11_1/2x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack reflective-and-greenhouse-films This rooting formulation contains:Nordic Pure Custom MERV 13 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition